<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <link rel="stylesheet" type="text/css" href="task4.css" />
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    <title>登录页</title>
</head>

<body style="margin:0">
    <div class=" header">
        <div class="corner">
            <p>注册</p>
        </div>
        <div class="middle">
            <p>登录</p>
        </div>
        <div class="corner">
            <p>关闭</p>
        </div>
    </div>
    <form>
        <input type="number" placeholder="请输入手机号">
        <input type="password" placeholder="请输入密码">
    </form>
    <button class="button">登 录</button>
    <button class="forget">忘记密码</button>
</body>

</html>